Valve for blowing-engines.



110.831.9222. PATENTED SEPT. 25, 1906. J. F. M. PATITZ. VALVE FORBLOWING ENGINES. APPLICATION FILED DEO.15, 1902. RENEWED APR. 25, 1906.

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No. 831,982. 'PATENTED SEPT. 25, 1906. J. P. M. PATITZ.

VALVE FOR BLOWING ENGINES.

APPLICATION FILED-DEG. 15, 1902. RENEWED APR. 25, 1906.

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UNITED STATES PATENT OFFICE.

JOHANN FREDERICK MAX PATITZ, OF MILWAUKEE, WISCONSIN, ASSIGNOR TOALLIS-OHALMERS COMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF NEWJERSEY.

VALVE FOR BLOWING-ENGINES.

Specification of Letters Patent.

Patented Sept. 25, 1906.

Application filed December 15, 1902. Renewed April 25. 1906. Serial No,313.678.

To all whom. it may concern:

Be it known that I, JOHANN FREDERICK MAX PATITZ, a citizen of the UnitedStates, residing at Milwaukee, in the county of Milwaukee and State ofWisconsin, have invented certain new and useful Improvements in Valvesfor BlowingEngines, of which the following is a specification.

This invention relates to an improvement in valves for air-compressingand blowing engines, and has especial reference to that class of valveswhich is used for controlling the inlet of air to the compressingmechanisms, all of which will more fully hereinafter appear.

The principal object of the invention is to provide a simple,economical, and efiicient type of balance-valve for air-compressing andblowing engines.

A further object of the invention is to provide a simple, economical,and durable construction of valve which is readily accessible forrepairs and so arranged with reference to the other parts that thebreakage of such will not cause any falling of parts into thecompressing mechanism to injure the same.

Further objects of the invention will appear from an examination of thedrawings and the following description and claims.

The invention consists principally in the combination of a cylinderprovided with a cylinder-head, a cylindrical valve-guide secured theretoand projecting therefrom and having lateral openings in its side walls,and a shell-valve surrounding and mounted on the outer surface of theguide to cover and uncover the lateral air-inlet openings in the same.

The invention consists, further, in a blowing-engine in which there arecombined a cylinder, a cylinder-head thereon having a central openingtherein, a cylindrical valveguide secured thereto and projectingtherefrom and having a plurality of lateral air-inlet openings in itsside walls, and a cylindrical shell-valve mounted on the valve-guideprovided with perforate and imperforate parts to open and close theair-inlet passages in the valve-guide.

The invention consists, further and finally, in the features,combinations, and details of construction hereinafter described andclaimed.

the like.

In the accompanying drawings, Figure 1 is.

a vertical sectional elevation of an engine fitted with an inlet-valveconstructed in ac with these improvements I make a compressing-cylindera of the desired size, shape, and strength to withstand the ordinarystress and strains incident to the use thereof. Detachably secured to atleast one end of this compressing-cylinder is a hollow cylinder-head b,which is secured thereto in any ordinary manner, such as by the use ofbolts, studs, and

vided with a piston portion 0, having a truncatedconeshaped central hubd and a pistonrod e extending outwardly therefrom and inother times, thecylinder-head is provided with a central aperture or opening f in axialalinement with the axis of the piston-rod and surrounding the same.Detachably secured to such cylinder-head in axial alinement with thecentral opening thereof is a valve-guide g, circular in contour whenlooking at it in crosssection or plan view and extending outwardlyfromsuch cylinder-head, so as to leave a reasonable amount of space betweenits walls and the walls of the aperture f of the cylinder-head, in whicha controlling-valve may play or operate. This valve-guide is providedwith an inner truncatedcone-shaped chamber h, which the truncatedcone-shaped boss on the piston substantially fills, so as to reduce thelost or waste space in the guide to a minimum, and thereby take as muchadvantage of the compressing action of the piston as possible. Thecylindrical valve-guide is further provided with a plurality of lateralair-inlet openings or perforations 4,, formed inthe side walls thereofby a plurality of ribs which connect the upper and lower portions of thecylindrical valve-guide together, as-

shown particularly in Fig. 1. The central portion of this valve-guide isprovided with a stufling-boX is, through which the piston-rod Thecompressing-cylinder is pro passes, which acts to prevent any loss orleakage of air therefrom.

To open and close the air-inlet passages of the valve-guide at theproper time, a cylindrical shell-valve Z is provided and reciprocatinglymounted on the cylindrical valveguide. The lower part of thisshcll-valve is imperforate, and the upper part is provided with aplurality of perforations m, diagonally arranged therein and which arereally formed by an annular opening divided into a plurality of diagonalopenings by means of a plurality of diagonally-arranged ribs n. Then theshell-valve is in one position, the imperforate part closes theinlet-passage in the valveguide, and when it is at its other position ornear its other limit of motion the diagonallyarranged perforations inthe shell-valve are opposite the inlet-passages in the valve-guide andserve to admit air therethrough and into the compressing-chamber p ofthe enginecylinder.

The valve-guide is provided with packingrings 9, which serve to preventleakage of the air between it and the shell-valve, excepting at thedesired times, and also assists in taking up wear of theparts. From anexamination of the drawings it will be seen that the cylindricalshell-valve is arranged outside the engine-cylinder and where it is notsubjected to any substantial fluid-pressure and as a consequence may beoperated by the minimum amount of energy. To operate or reciprocate thiscylindrical shellvalve, a rock-shaft r is provided and vibratinglymounted in brackets 8, attached to the cylinder-head. This rock-shaft isprovided with a lever arm or arms t, which, by means of links u, areconnected with the cylindrical shell-valve. It will also be understoodthat this rock-shaft may be connected by any desired mechanism,preferably an eccentric-rod and eccentric, (not shown,) with somerotatable part of the engine, by which the necessary vibrations areimparted thereto, so that the shell-valve is reciprocated by theinstrumentality thereof by and during the ordinary operations of theengine, all of which will be understood and appreciated by those skilledin the art.

I claim 1. In an engine of the class described, the combination of anengine-cylinder, a cylinderhead detachably secured thereto and providedwith a central opening or aperture, a valve-guide removably secured tothe cylinder-head in axial alinement with the central opening oraperture therein and provided with a truncated-cone-shaped chamber inits inner surface and a plurality of air-inlet passages or openings inits side wall, a compressing-piston in such cylinder provided with atruncatedcone-shaped boss or hub adapted to enter and substantially fillthe truncatedcone-shaped chamber in the valve-guide, and A a cylindricalshell-valve for opening and closing the air-inlet passages in suchvalve-guide, substantially as described.

2. In an engine of the class described, the combination of a cylinder, acylinder-head detachably secured thereto and provided with a centralaperture or opening, a cylindrical valve-guide detachably secured thereto in axial alinement with the opening in such cylinder-head andprovided with an axiallyarranged tapered chamber in its inner end thelarger end of which opens into the compressing-cylinder and with aplurality of airinlet passages in its side walls, a hollow cylindricalshell-valve mounted on the valveguide to open and close the air-inletpassages, means for reciprocating such shellvalve by and during themovements of the engine, and a piston provided with a tapered boss orprojection substantially fitting the tapered chamber in the innersurface of the valve-guide,

substantially as described.

3. In an engine of the class described, the combination of a cylinder, acylinder-head detachably secured thereto and provided with a centralaperture or opening, a cylindrical valve-guide detachably secured to thecylinder-head in alinement with the central aperture therein andprovided with. a plurality of air-inlet passages in its side walls andwith an axially-arranged stufling-box and an inner truncated-cone-shapedchamber, a piston provided with a truncated-cone-shaped boss orprojection substantially fitting the truncated-cone-shaped chamber inthe valveguide, a piston-rod secured to such piston and extending outthrough the stuffing-box in the valve-guide, a cylindrical shell-valvereciprocatingly mounted on the valve-guide and provided with perforateand imperforate parts to open and close the air-inlet passages in suchvalve-guide, and means for reciprocating such shell-valve by and duringthe operation of the engine, substantially as described.

4. In an engine of the class described, the combination of a cylinder, acylinder-head detachably secured thereto and provided with a centralaperture or opening, acylindrical valve-guide detachably secured to thecylinder-head in axial alinement with the opening therein and providedwith an inner truncated-cone-shaped chamber and with air-inlet passagesin its side walls connecting such truncated-cone-shaped chamber with theouter air, a stufiing-box at its axial center, a piston in thecompressing-cylind er provided with a truncatedcone-shaped hub or bosssubstantially fitting the truncatedcone shaped chamber in the guide, apiston-rod extending out through the stufling-box in the valve-guide, acylindrical shell-valve mounted on the valve-guide and provided with aplurality of diagonally-arranged perforations and an imperforate part toopen and close the IIO air-inlet passages in such valve-guide, and meansfor reciprocating such shell-valve by and during the movements of theengine, substantially as described.

5. In an engine of the class described, the combination of a hollowcylinderhead provided with a cylindrical central opening formed of animperforate wall, a valve-guide having perforate and imperforateportions secured therein and projecting outwardly therefrom so as toform an annular space between it and the imperforate cylindrical wall ofthe cylinder-head, a cylindrical shell-valve mounted on the outside ofsuch valve-guide to open and close the perforations therein, and meansto reciprocate said valve by and during the movements of the engine,substantially as described.

6. In an engine of the class described, the

20 combination of a cylinder provided with a cylinder-head having acylindrical aperture or opening therein formed of an imperforatecylinder-wall, a cylindrical valve-guide secured to the inner portion ofthe cylinderhead in axial alinement with the opening therein andextending outwardly therefrom and provided with an upper imperforatepart and a lower perforate part forming in connection with theimperforate cylindrical wall of the cylinder-head an annular air-space,a cylindrical shell-valve mounted on the valveguide and provided with anupper perforate portion and a lower imperforate portion, and means forreciprocating the shell-valve by and during the movements of the engine,substantially as described.

JOHANN FREDERICK MAX PA'IITZ. Witnesses:

IRVING H. REYNOLDS, JOHN DAY, Jr.

